Question

Ted and his classmates started watering flowers at 11:36 andfinished watering all the flowers at 13:25. If they wateredflowers at a constant rate, at what time did they finish watering4/7 of the flowers? Give your answer in a 24-hour clock format,such as 19:00.Enter the answer

Answer 1

SOLUTION

The duration for watering the whole flower is

$\begin{gathered} \text{ finishing time- starting time } \\ 13\colon25-11\colon36 \\ \end{gathered}$

Which is

$1\text{hours 49minutes or 109 minutes }$

This means it takes 109minutes for watering the whole flowers.

The time taken for 4/7 of the flowers is

$\begin{gathered} \frac{4}{7}0f\text{ 109} \\ \\ \frac{4}{7}\times109=\frac{436}{7}=62.29 \\ \\ \end{gathered}$

Then it takes 62minutes 29seconds to wet 4/7 of the flowers

$\begin{gathered} 62\text{minutes 29 seconds will be } \\ 1\text{hours 0.5minutes } \end{gathered}$

The time they will finish watering 4/7 of the flowers will be

$\begin{gathered} \text{starting time +Duration for 4/7 of the flowers } \\ 11\colon36+1;05 \\ 12\colon41 \end{gathered}$